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US 6,548,211 B1Granted
Negative electrode plate for lead storage battery
AssigneeJapan Storage Battery Co., Ltd.
InventorsAkira Kamada, Masahiko Kosai
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Abstract
Graphite powder having a mean particle size not larger than 30 μm is added to a negative electrode plate for a lead storage battery. Preferably, the amount of graphite powder added is in the range of from 0.3% to 2% by weight. Preferably, vein powder is used as the graphite powder. More preferably, 0.3% or more by weight of an organic expander is added.
Claims1
A negative electrode plate for a lead acid battery comprising:
- a negative electrode active material;
- vein graphite powder having a mean particle size not larger than 30 μm;
- the amount of the vein graphite powder is in the 0.3 to 2% by weight of the negative electrode active material and
- 0.3% by weight or more of an organic expander.
1 more element
Dependencies are inferred from the claim text.